Euclid on lines….
Lines, without points at their extremities, are lengths. Imagine a world of lines everywhere and those lines appear to have no beginning and no end, and they go on to infinity. Such is a line.
If a line has extremities and those extremities are points, and that line sits evenly between those points, the line is considered a straight line.
It’s nice to define straight lines, I imagine they’re useful for many industrial applications. Outside of industry, I rarely see a straight line.
Musical lines sit between the beginning and end of a phrase. Those lines are rarely straight, they move up and down and varying dynamics.
The line that is your life starts with birth and ends with death. Similar to a musical line, a life experiences ups, downs, and varying dynamics.
While hiking, nature will present you with lines of trees, flowers, and more… and rarely are those lines straight.
A heart beat, doesn’t move in a straight line until it stops. And at that point that it stops, their appears a seemingly breadthless line without an extremity, until the machine is shut off.